译文：
a) 波纹管与阀杆的间隙, 一般取1～2 mm。 b) 波纹管不能承受扭矩, 设计时应保证波纹管只拉伸和压缩。 c) 波纹管阀门在开启或关闭状态时, 波纹管分别处于压缩和拉伸状态。 d) 波纹管应有承受压力所必须的最小迭层厚度, 并要求进行试验。 e) 注意材料的相容性, 实践证明inconel 合金是波纹管耐高温高压的较好材料。 f) 波纹管的焊接质量应有工艺评定和焊接记录。 g) 作为节流用的波纹管阀应考虑流速对波纹管的影响。 h) 波纹管具有一定的刚度, 应考虑波纹管拉伸或压缩时引起的操作力矩的增加。

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原文：
a) corrugated pipe with the valve stem clearance, normally take 1 ~ 2 mm. b) corrugated pipe can not withstand torque, the design should ensure the bellows only tension and compression. c) bellows valve open or closed, the bellows were in a state of compression and tension. d) bellows pressure should be the minimum necessary thickness Diego, and asked to test. e) Note that the compatibility of materials, proven high temperature inconel alloy bellows pressure is a better material. f) the welding quality of bellows and welding procedure qualification record should be. g) as a throttle valve with bellows bellows should consider the impact of velocity on. h) has a certain stiffness of corrugated pipe, corrugated pipe should be considered when stretched or compressed due to the increase in operating torque.